package com.umpay.config;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * spring上下文
 * @ClassName ApplicationContextProvider
 * @Description TODO
 * @author FENG JUN LIU
 * @Date 2018年2月8日
 * @version 1.0.0
 */
@Component
public class ApplicationContextProvider implements ApplicationContextAware {

    /** * 上下文对象实例 */
    private static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }

    /** * 获取applicationContext * @return */
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    /** * 通过name获取 Bean. * @param name * @return */
    public static Object getBean(String name) {
        return getApplicationContext().getBean(name);
    }

    /** * 通过class获取Bean. * @param clazz * @param <T> * @return */
    public static <T> T getBean(Class<T> clazz) {
        return getApplicationContext().getBean(clazz);
    }

    /** * 通过name,以及Clazz返回指定的Bean * @param name * @param clazz * @param <T> * @return */
    public static <T> T getBean(String name, Class<T> clazz) {
        return getApplicationContext().getBean(name, clazz);
    }
}
